Age and growth of Scotia Sea icefish, Chaenocephalus aceratus, from the South Shetland Islands (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Age and growth of Scotia Sea icefish, Chaenocephalus aceratus, from the South Shetland Islands (Articolo in rivista) (literal)

Anno

• 2004-01-01T00:00:00+01:00 (literal)

Alternative label

• La Mesa M. (1), Ashford J. (2), Larson E. (2), Vacchi M.(3) (2004)
  Age and growth of Scotia Sea icefish, Chaenocephalus aceratus, from the South Shetland Islands
  in Antarctic science (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• La Mesa M. (1), Ashford J. (2), Larson E. (2), Vacchi M.(3) (literal)

Pagina inizio

• 253 (literal)

Pagina fine

• 262 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

• DOI: 10.1017/S0954102004002044 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 16(3) (literal)

Rivista

• Antarctic science (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• (1) ISMAR-CNR, Istituto di Scienze Marine, Sezione Pesca Marittima, Largo Fiera della Pesca, 60125, Ancona, Italy (2) Center of Quantitative Fisheries Ecology, Old Dominion University, Technology Building Room 102, 4608 Hampton Boulevard, Norfolk, VA 23529, USA (3) Istituto Centrale per la Ricerca Scientifica e Tecnologica Applicata al Mare, Via di Casalotti 300, 00166, Roma, Italy (literal)

Titolo

• Age and growth of Scotia Sea icefish, Chaenocephalus aceratus, from the South Shetland Islands (literal)

Abstract

• Samples of Chaenocephalus aceratus (Loennberg) were collected during a trawl survey carried out around the South Shetland Islands in January¨CFebruary 2002. Fish were caught by commercial bottom trawl fishing down to 500 m depth, using a stratified randomized sampling design. As observed in other recent surveys within the same area, C. aceratus represented one of the predominant species. Overall, 357 specimens ranging from 13 and 67 cm (TL) were selected for the present study. Ages were estimated by counting annuli present in the sagittal otoliths, exposed by grinding and polishing along their sagittal plane. To estimate the precision of age data, we compared blind readings by readers from different institutions. The age range was 1¨C17 years for females and 1¨C15 years for males. Von Bertalanffy growth curves were fitted to the estimated age-length data for each sex. The estimated values of asymptotic length L¡Þ (cm) and K (year-1) were respectively 79.8 and 0.07 for females and 60.0 and 0.09 for males. The growth performance index ranged between 2 and 2.5, similar to that reported in other icefish. Sexual maturity was attained by females and males at about 10 and 9 years old respectively, at about 60% of their maximum estimated age. These results are compared with age and growth data available in the literature for C. aceratus, and discussed in the light of recent commercial exploitation. (literal)

Prodotto di

• Marine science institute (ISMAR) (Istituto)
• Impatto antropico e ambientale sull'ecosistema marino (TA.P04.007.002) (Modulo)
• Ruolo degli ambienti estremi nei processi climatici globali (TA.P02.006.008) (Modulo)

Autore CNR

• MARIO LA MESA (Persona)

Insieme di parole chiave

• Keywords of "Age and growth of Scotia Sea icefish, Chaenocephalus aceratus, from the South Shetland Islands" (Insieme di parole chiave)

Incoming links:

Prodotto

• Marine science institute (ISMAR) (Istituto)
• Impatto antropico e ambientale sull'ecosistema marino (TA.P04.007.002) (Modulo)
• Ruolo degli ambienti estremi nei processi climatici globali (TA.P02.006.008) (Modulo)

Autore CNR di

• MARIO LA MESA (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Antarctic science (Rivista)

Insieme di parole chiave di

• Keywords of "Age and growth of Scotia Sea icefish, Chaenocephalus aceratus, from the South Shetland Islands" (Insieme di parole chiave)